Geofence Event-Driven Case Study
Processing enter/exit geofence events with ordered retries, duplicate suppression, and visibility into delayed consumer pipelines.
- Node.js
- NestJS
- Kafka
- PostgreSQL
- Redis
GitHubCase Study
Projects
Engineering case studies from backend systems, reliability work, and database performance tuning.
Kafka Outbox Pattern Demo
Reference implementation for transactional outbox flow with idempotent publishing, dead-letter routing, and operational metrics.
- NestJS
- Kafka
- PostgreSQL
- Docker
GitHubImplementation Notes
RedisGraph Hierarchical Auth Model
Evaluating graph-based permission inheritance for tenant-scoped authorization where role resolution must stay fast under load.
- Redis
- RedisGraph
- TypeScript
- Docker
GitHubWrite-up
PostgreSQL Optimization Notes
A running set of production query-plan experiments, index decisions, and p95 latency improvements from real services.
- PostgreSQL
- SQL
- EXPLAIN ANALYZE
RepositoryArticle